From: Nicolas George <nicolas.george@ens.fr>
Date: Wed, 19 Sep 2007 05:46:21 +0000 (-0700)
Subject: uml: use correct type in BLKGETSIZE ioctl
X-Git-Tag: v2.6.23-rc7~29
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2c392a4f47f41b24432e6aa77bb5167d0bbb10c5;p=pandora-kernel.git

uml: use correct type in BLKGETSIZE ioctl

I found a type mismatch in UML that makes host block devices unusable as ubd
devices on x86_64 and other 64 bits systems (segfault of the mm subsystem):

In block/ioctl.c, the following lines show that the BLKGETSIZE ioctl expects
a pointer to a long:

	case BLKGETSIZE:
		if ((bdev->bd_inode->i_size >> 9) > ~0UL)
			return -EFBIG;
		return put_ulong(arg, bdev->bd_inode->i_size >> 9);

In arch/um/os-Linux/file.c, os_file_size calls it with an int.

The ioctl_list man page should be fixed as well.

Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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